I'm trying to learn about network. I bought Cisco 2950 for testing. I set it up and finding out the way to cap its ports at 20Mbps or 50Mbps. Do you know what command or how to do this?
Also what command to check the port speed or to uncap the port?
Is there much advantage to going with the 2960 series switches vs. the 2950 series? Basically I'm looking at 24 port and 48 port switches (10/100) with GBIT (copper) uplinks.
I have 2 racks in a DC that cross connected together. Now, the datacenter gives me 1 port and I would like to put 1 switch at each rack. I have successfully set up 1 switch and connect to the internet. But, I am unable to set up the other.
Since now I utilize Cisco 2924 in my racks, now I am going to install a new rack and I want to know if to install again 2924 or you recommend me 2950? what important differences (pros and cons) offers the 2950 front to 2924?
We are currently showing a bunch of our server as half duplex on the nic when performing the command "ethtool eth0". The switches are all set to full duplex on our network.
Every single port has duplex full and speed 100. We can't seem to figure out why specific servers are showing half duplex and some are showing full. Can anybody give any insight on this issue and perhaps where to look? I am stumped at this point.
here is an example of one showing half:
ethtool eth0 Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised auto-negotiation: Yes Speed: 100Mb/s Duplex: Half Port: Twisted Pair PHYAD: 0 Transceiver: internal Auto-negotiation: on Supports Wake-on: umbg Wake-on: g Current message level: 0x00000007 (7) Link detected: yes
We are looking to replace our existing WatchGuard Firebox's with a hopefully more reliable firewall from Cisco's range although I'm a bit lost when it comes to the different ranges.
Could somebody suggest a firewall that is capable of:
1: Both NAT & Drop-in (bridge) mode 2: Pretty low bandwidth requirements, no more than 10mbit/s traffic 3: SNMP Monitoring 4: High availability pairing
I see a lot of DDos related articles here at WHT. We've got hit multiple times by DDos and had to handle those attacks everytime with a different approach.
The largest one and the most well know one (we were in Times Mag, AP news, CNN, slashdot, you name it - just do a search about us on WHT) was Russian botnet cyberattack - we had to anaylyze netflow and then block everything on our edge routers, then on the firewall and then locally on the servers.
Since then we had number of other attacks, some of them we were not able to defend on the server level, while, as you can understand we can't do netwflow and manual intervention evey time somebody gets an attach.
We have very good scripts which allow to mitigate huge number of DDos attack, whet our scripts are finding attacking IPs and blocking them automatically - still some attacks could be blocked only on the router level.
I've read that Cisco Guard (I am interesed in 65xx version of it) suppose to mitigate DDos attacks in automatic mode.
after months of disruption moving servers into a new data centre, our once reliable colocation company has now had nearly 6 hours downtime in the last 16 hours. So much for network redundancy.
I am looking at picking up a switch to mess around with at home. I found the following within driving distance but have no idea of which one will give me more up to date, hands on experience. Any feedback is greatly appreciated.
Used Cisco WS-C5509 Chassis with power supply ( POWER SUPPLY 34-0870-01), and fan (WSC5509FAN) Cisco WS-X5530-E2 Supervisor Engine III Modules Cisco Systems WS-U5537-FETX CISCO 4 PORT 100BASETX UPLINK MODULE Cisco WS-X5234-RJ45 Switch Modules X 8
$160 each.
Cisco WS-C5500 Chassis POWER SUPPLY 34-0773-03 Cisco Ws-x5550 Supervisor Engine Iii G-series WS-X5234-RJ45 X 11
For $200
Cisco WS-C5505 Chassis Cisco WS-X5530-E2 Supervisor Engine III Modules Cisco WS-U5533-FEFX-MMF Supervisor Engine III Uplink Modules Cisco WS-X5225R Switch Modules X 2
I am setting up a small ccna lab and i have RIP working and i can ping my lan from both routers, but only certain hosts on the lan from the one router the setup is
1) I was recommended to chose the XL-EN model switches because it seems they have more Memory, but the second one in the list (Catalyst) is not a XL-EN, is that going to have any affect performance wise? or it doesn't really matter?
2) I was also recommended to choose managed switches because that way I can use the SNMP features to measure bandwidth, are any of the switches above unmanaged?
3) I also want to be able to manage the switch remotely, web managed, are any of the switches above web-manageable?
4) Most importantly, when my datacenter give me a 100mbit drop, I dont know which port to plug it in in the 29** series. In the 35** I see it clearly but I am not able to see it in the 29**, any ideas?
5) On some of these switches I see a special port called "Console", what is it? where does that connect to?
6) Do any of the switches above not have a console port?
I have a single /24 and my firewall is on x.2 and routes traffic for each of the servers.
Now i have a new Cisco ASA 5510 that i want to replace the aging firewall currently in place, however i dont want to put the firewall into transparent mode because i dont want to lose all the functionality.
Now with most firewalls your outside subnet cannot be the same as your inside subnet, which is fine if you are using NAT but i dont want to NAT. I need all of my servers to remain with their public ip addresses.
So what is the ideal way to setup something like this? Request my ISP give me a /30 for the ASA outside interface or something? And then ask them to route my /24 through the /30 new subnet?
whether I can grant a specific vlan priority over all other traffic..and if so does anyone know an appropriate site where I can find documentation on how to do so?
From the posts in this forum it would appear that a number of forumites are colocation service providers and web hosters that use Cisco gear.
I was reviewing the Cisco End User License Agreement that was included in the router box. Under the General Limitations section, "Customer shall have no right, and Customer specifically agrees not to:", item (iv) states, "use or permit the Software to be used to perform services for third parties, whether on a service bureau basis or time sharing basis or otherwise, without the express written authorization of Cisco".
Does this mean that a service provider is required to acquire a separate license similar to the Microsoft Service provider license?
I have a cisco 2960G switch that I used for colocation, the colocation provider does all the routing all I need is this switch. It's just a plug and play operation, however I now need to do some more difficult stuff.
So, I plugged their bandwidth uplink into port 20.
I have really no idea on how to setup anything other than the basic of the switch.
Is it possible to setup Private Vlans in this situation? I am in need of a setup like this:
All port 1-19 in private vlans, but still able to communicate with port 20 to get internet access. Port 1-19 cannot communicate with each other except by going through port 20, through the internet.
I also want to know if it's possible to statically assign each port with a specific IP? Just say I want all traffic to a static ip to only go to port 1? Is that possible? I want to be able to limit the control of IPs through the switch not through the server.
Right now all my IPs are assign on the server level, meaning the server can take each other IPs and mess with each other connections.
at 11x 2851's. When we got the quote they had added on Cisco Advanced IP SERVICES.
We arent sure if that is just the security bundle, or something they are trying to toss on for more money.
2851 w/ AC PWR,2GE,4HWIC,3PVDM,1NME-XD,2AIM,IP BASE,64F/256D Cisco 2800 ADVANCED IP SERVICES Maximum Compact and USB Flash Four port 10/100 Ethernet switch interface card Updated 1-Port T1/Fractional T1 DSU/CSU WAN Interface Card 64 to 256 MB CF Factory Upgrade for Cisco 2800 Series 256MB USB Flash Token for Cisco 1800/2800/3800 series Cisco 2821/51 AC power supply Power Cord,110V Device manager for routers 256MB DDR DRAM Memory factory default for the Cisco 2800 8X5XNBD Hardware Replacement 2851 w/ AC PWR,2GE,4HWIC,3 (1 Year)
My understanding is that the IOS software running in most of their products is non-transferable. So clearly this prevents a user from receiving updates if they purchase used hardware (i.e. ebay). However, isn't it possible to purchase an IOS software license from Cisco for any of their supported product?
Their web site is a mess! I've spent, literally, hours on their site trying to figure out how to purchase such a license, or how to purchase a service plan that might entitle me to IOS updates.
And how does "SMARTnet" fit into this puzzle? Do I need a SMARTnet contract to download maintenance updates, even for *new* hardware that I've purchased?
On used equipment (for example, 6509s), is there any possibility of getting IOS upgrades from Cisco? Is there any sort of re-certification process? My only concern with used equipment is that often times the firmware is years old.
I already get a new firewall for my server cisco ASA and I don't know how to config it is there any rules to get protection from shell and virus trojan as example